Abstract. WR; Reviewed: GAK 12/13/05. Solution & Interoperability Test Lab Application Notes 2005 Avaya Inc. All Rights Reserved.
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1 Configuring Single Instane Rapid Spanning Tree Protool (RSTP) Between an Avaya C363T-PWR Converged Stakable Swith and a 3COM OffieConnet Managed Swith 9 Issue 1.0 Abstrat These Appliation Notes desribe a single instane Rapid Spanning Tree Protool (RSTP) onfiguration with an Avaya C363T-PWR Converged Stakable Swith and a 3COM OffieConnet Managed Swith 9 exhibiting basi swith-to-swith redundany. Primary and seondary infrastruture links were used to demonstrate RSTP ompatibility between Avaya and 3COM Layer-2 swithing. Avaya IP Telephony was implemented in this onfiguration to demonstrate link resilieny through the use of RSTP to maintain Voie over IP traffi without interruption of servie in the event of link failure Avaya In. All Rights Reserved. 1 of 14
2 1. Introdution The IEEE 802.1w Rapid Spanning Tree Protool (RSTP) was developed to derease the reovery time of redundant paths in Layer 2 networks as ompared to the IEEE 802.1d Spanning Tree Protool (STP) while ontinuing to redue the impat of aidental network loops. RSTP an redue the spanning tree onvergene time to 5 seonds or less to establish a network path and redue network downtime. In the network diagram depited in Figure 1, the swithes are onneted by a 1000 BaseX link with a 100 BaseX link as a redundany pair. When a link beomes out of servie, the redundant link will beome ative to maintain Layer-2 onnetivity. Avaya IP Offie IP412 Offie Server Avaya C363T-PWR Converged Stakable Swith ( /VLAN 1) 1/ q 1000 Base X 1/9 1:9 1: /VLAN209 1/ q 100 BaseX 802.1q 3COM OffieConnet Managed Swith 9 ( /VLAN1) Router /VLAN 1 Avaya 4620 IP Telephones ( /VLAN209) ( /VLAN209) Figure 1: Network Diagram for RSTP Configuration 2005 Avaya In. All Rights Reserved. 2 of 14
3 2. Equipment and Software Validated The following equipment and software were used for the sample onfiguration provided: Equipment Software Avaya IP Offie IP (29) Avaya C363T-PWR Converged Stakable Swith Avaya 4620 IP Telephones v2.2 3Com OffieConnet Managed Swith Rapid Spanning Tree 802.1w Approah The Avaya C363T-PWR Converged Stakable Swith supports an implementation of RSTP that is ompatible with the IEEE 802.1d standard and does not support per VLAN RSTP. This means that Avaya C363T-PWR Converged Stakable Swith will send out untagged RSTP messages. Diretly onneted trunk ports between swithes are expliitly onfigured as point-topoint for fast onvergene and as non-edge ports. All aess ports for shared media are expliitly onfigured to be edge ports to transition rapidly to forwarding state when the link beomes in-servie. If the edge port detets a Bridge Protool Data Unit (BPDU) from another bridge, the operational edge port will transition to false and the port will partiipate in the topology. With Spanning Tree, a lower root priority translates to higher root bridge preedene. These swithes were onfigured, by default, suh that the Avaya C363T-PWR beomes the root bridge. Also, the 1000 BaseX link beomes the normally operating link, with the 100 BaseX trunk as the normally bloking bakup. 4. Avaya C363T-PWR Converged Stakable Swith Configuration Start a terminal session to the Avaya C363T-PWR Converged Stakable Swith and log into the onsole using valid login redentials. Listed below are the onfiguration steps used to enable RSTP: Create the voie VLAN 209. VLAN 1 exists by default and will be used as the data and management VLAN. set vlan 209 name vlan209 Configure IP addressing for the inband management interfae and set the default gateway. set interfae inband set ip route Avaya In. All Rights Reserved. 3 of 14
4 Assign a high priority level and the voie VLAN to the port onneted to IP Offie. set port level 1/9 7 set port vlan 209 1/9 Enable dot1q trunking on the two ports with onnetions to the OffieConnet swith. Bind all VLANs onfigured on the C363T-PWR to these ports so the traffi is passed. set trunk 1/1 dot1q set trunk 1/51 dot1q set port vlan-binding-mode 1/1 bind-to-onfigured set port vlan-binding-mode 1/51 bind-to-onfigured Globally enable the spanning-tree algorithm and onfigure the swith for RSTP operation. Enable the RSTP default path ost. Set the spantree priority to a value less than the 3COM OffieConnet spantree priority value (set in the Spanning Tree Setup sreen shown in Setion 5) so that the Avaya C363T- PWR will beome the root bridge. set spantree enable set spantree version rapid-spanning-tree set spantree default-path-ost rapid-spanning-tree set spantree priority 4096 Set the trunk ports as non-edge ports and fore point-to-point MAC address forwarding. Set the lassifiation of the trunk ports to valuable to erase all learned MAC addressing during hanges in RSTP state. set port edge admin state 1/51 non-edge-port set port point-to-point admin status 1/51 fore-true set port lassifiation 1/51 valuable set port edge admin state 1/1 non-edge-port set port point-to-point admin status 1/1 fore-true set port lassifiation 1/1 valuable Set the IP Offie port as an edge port and fore point-to-point MAC forwarding. Set the lassifiation of the edge ports to regular to maintain all learned MAC addressing during hanges in RSTP state. set port edge admin state 1/9 edge-port set port point-to-point admin status 1/9 fore-true set port lassifiation 1/9 regular 2005 Avaya In. All Rights Reserved. 4 of 14
5 5. Configure the 3COM OffieConnet Swith This setion assumes that the 3COM OffieConnet swith has been onfigured with a management IP address and that web-based administration is allowed. Browse to the 3COM OffieConnet management address and selet the Devie View tab Avaya In. All Rights Reserved. 5 of 14
6 To reate the voie VLAN, selet Bridge VLAN Create. Enter the Voie VLAN number (as set in Setion 4) and an arbitrary name. Selet OK. Selet Bridge VLAN Modify. Add the station ports (1, 2, 5 and 6) and the trunk ports (8 and 9) to the C363T-PWR as tagged members of VLAN 209 (VLAN 1 is the default, untagged member of all ports). Selet OK Avaya In. All Rights Reserved. 6 of 14
7 Selet Bridge Spanning Tree Setup and ensure that Rapid Spanning Tree is enabled. The Bridge Priority should be a higher number than the C363T-PWR (set via the set spantree priority ommand shown in Setion 4) so the C363T-PWR beomes the root bridge Avaya In. All Rights Reserved. 7 of 14
8 Selet Bridge Spanning Tree Port Mode and ensure that spanning tree is enabled on the trunk ports. Enabling Spanning Tree on all ports protets against the reation of aidental loops. 6. Verifiation While there is one path in the network, traffi from edge nodes should pass and network interruption should be less than a few seonds. If a ping fails or the network interruption is more than a few seonds, use the ommands of this setion to isolate the problem Avaya In. All Rights Reserved. 8 of 14
9 1. After onneting the onfiguration, verify suessful Spanning Tree onvergene: a. The C363T-PWR onsiders itself to be root and the trunk ports are in the forwarding state. C360-1(super)# show span Spanning tree state is enabled Designated Root: d ff Designated Root Priority: 4096 Designated Root Cost: 0 Designated Root Port: No root port, Bridge is Designated root Root Max Age: 20 Hello Time: 2 Root Forward Delay: 15 Bridge ID MAC ADDR: d ff Bridge ID priority: 4096 Bridge Max Age: 20 Bridge Hello Time: 2 Bridge Forward Delay: 15 Tx Hold Count 3 Spanning Tree Version is rapid spanning tree Spanning Tree Default Path Costs is aording to rapid spanning tree Port State Cost Priority /1 Forwarding /51 Forwarding Avaya In. All Rights Reserved. 9 of 14
10 b. The 3COM OffieConnet onsiders the Avaya C363T-PWR to be the Designated Root Avaya In. All Rights Reserved. 10 of 14
11 . The 3COM OffieConnet has the 1 Gb/s trunk (port 9) to the C363T-PWR in the Forwarding state and the 100 Mb/s trunk (port 8) in the Bloking state. Selet Bridge Spanning Tree Port Summary. 2. Verify that the Avaya IP Telephones register and an plae alls, and that talk path quality is good Avaya In. All Rights Reserved. 11 of 14
12 3. Disonnet the 1 Gb/s trunk and observe that the redundant link beomes ative and rapidly transitions to the Forwarding state. Convergene times should be on the order of 5 seonds or less. Calls should stay up. Selet Bridge Spanning Tree Port Summary and verify that port 8 has transitioned to the Forwarding state. 4. Reonnet the 1 Gb/s link and observe the transition to the Forwarding state and the orresponding redundant link transitions to the Bloking state. Calls will not be torn down, although the talk path may be bloked until the transition has ompleted. Tests showed that the reonneted link began bidiretional forwarding after 30 seonds Avaya In. All Rights Reserved. 12 of 14
13 7. Conlusion Single instane RSTP operation between the Avaya C363T-PWR Converged Stakable Swith and the 3COM OffieConnet Managed Swith 9 is ompatible and a fast onvergene time (less than 5 seonds) an be ahieved in ase of link failure. Restoration of a failed link took 30 seonds from link up, until bidiretional traffi was restored. Connetivity between all of the vendors produts depited using 802.1w Rapid Spanning Tree Protool (RSTP) an be ahieved by following the guidelines demonstrated in these Appliation Notes. 8. Additional Referenes The following referene douments an be obtained online: From Avaya C360 Devie Manager User s Guide From OffieConnet Managed Swith 9 and Swith 9 FX Implementation Guide 2005 Avaya In. All Rights Reserved. 13 of 14
14 2005 Avaya In. All Rights Reserved. Avaya and the Avaya Logo are trademarks of Avaya In. All trademarks identified by and are registered trademarks or trademarks, respetively, of Avaya In. All other trademarks are the property of their respetive owners. The information provided in these Appliation Notes is subjet to hange without notie. The onfigurations, tehnial data, and reommendations provided in these Appliation Notes are believed to be aurate and dependable, but are presented without express or implied warranty. Users are responsible for their appliation of any produts speified in these Appliation Notes. Please any questions or omments pertaining to these Appliation Notes along with the full title name and filename, loated in the lower right orner, diretly to the Avaya Solution & Interoperability Test Lab at 2005 Avaya In. All Rights Reserved. 14 of 14
Abstract. MEP; Reviewed: GAK 10/17/2005. Solution & Interoperability Test Lab Application Notes 2005 Avaya Inc. All Rights Reserved.
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